Familiar UI is always nice. The less I have to learn about a UI, the more time I have to focus on the game itself. I guess that's why I never really had a beef with FFXIV's UI... It felt familiar enough from XI and the console games that I didn't really need to learn the basics of it, just needed to learn the intricacies which took all of 15 minutes.
The more I see of this game, the more fun it looks. I hear it's in OB now in Korea, so hopefully it'll be making its way state-side in the near future.